What is the magnitude of the impulse imparted by a kicked ball to the foot?

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    Impulse Magnitude
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Homework Help Overview

The problem involves calculating the magnitude of the impulse imparted by a kicked ball to the foot, focusing on a ball of mass 0.4 kg that is kicked with a speed of 5.0 m/s at an angle of 60° above the horizontal.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants discuss the calculation of impulse using the change in momentum, with one participant questioning the relevance of the angle in the calculation. There is also an attempt to clarify the correct approach to the problem.

Discussion Status

The discussion includes multiple interpretations regarding the significance of the angle in the impulse calculation. Participants are exploring different methods and expressing uncertainty about their approaches.

Contextual Notes

There is a mention of potential confusion regarding the angle's impact on the impulse calculation, indicating a need for clarification on assumptions made in the problem setup.

blayman5
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Homework Statement


A ball of mass 0.4 kg is initially at rest on the
ground. It is kicked and leaves the kicker’s
foot with a speed of 5.0 m/s in a direction 60◦
above the horizontal.
The magnitude of the impulse k~Ik imparted
by the ball to the foot is most nearly



The Attempt at a Solution



I=change(p)
pf-pi
mvf-mvi
(0.4)(5cos60)-(0.4)(0)
=1 N*s
Where did I go wrong in the problem?
 
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WOW how weird we posted the same problem near the same time as each other o_O

Do you go to Bellaire by any chance?

(BTW check my topic, I'm not sure I'm right but I did it differently than you)
 


Ha, that's really weird. No, I go to Connally. I don't know if the angle would matter or if it just would be the velocity itself. I got it wrong when I did it.
 


Ok, I was right, just ignore the angle :D
 


Ok, thanks!
 

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